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(No Model.)

A. P. DOHERTY, 'Decd.

A. M. DOHERTY, administratrix. PIPE GOUPLINGFOR WATER AND GAS PIPES ANDMAINS.

No. 284,285. Patented Sept. 4, 1883.

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ditional ones may be used of different sec- UNITED, STATEsi FRANKDOHEBTY,

PATENT OFFICE.

OF oononnus, onro; ANNIE M. DOHERTY ADMINISTRA- rnrx E SAID DOHERTY,DECEASED. I

PIPE-COUPLING FOR WAT-ER AND GAS PIPES AND MA|NS,

srnorrrcn'rron forming part of Letters Patent No. 284,285, datedSeptember 4,1883.

lin'and State of Ohio, have invented new and useful Improvements inPipe-Couplings for Water and Gas Pipes and Mains, of which the followingis aspecification.

Inthe drawings, Figure 1 is a longitudinal section of my couplingcomplete; Fig. 2, aview of the split ring, shown also in section at f,Fig. 1. Fig. .3 is an end elevation of the 'spigot end of the coupling,and Fig. 4 asimilar view of the bowl end of the coupling.

Arepresents the bowl, and B the spigot end of the pipe. I show but onesplit ring; but adtional diameters ,when extra strength of coupling isrequired.

In carrying out my invention I make the inside of the bowl witha beveledrecess, a, at

the mouth, into which the leadis to be driven, said recess expandingfrom the mouth toward the bottom of the bowl, forming an acute an- 12s jI the bowl in a shoulder, which forms a somegle with the line of thesideof the bowl, and

terminating at about one-third of the depth of what greater angle withthe side of the bowl.

Below this recess the sides I) of the bowl are parallel'with theaxis ofthe pipe, and terminate in a shoulder, a, at right angles to the axis ofthe pipe, and forming thebottom of the bowl.

The outside of thespigot d is shaped like a truncated cone, having itsbase at the end of sides of the how], a wedge-shaped space, 0,

which tapers to the bottom of the bowl. Into this wedge-shaped space thehard-metal ring is tightly driven, sealing the joint and keying the bowland spigot together securely. This ring takes the. place of. the usualpacking of yarn or felt, which is objectionable, not only on accountofits uncleanliness, being liable to decay, but also, from its yieldingnature, preventing the proper upsetting of the lead when driven againstit, and requiring "an excessiveamount of lead. Having driven the ringdown tightly into place,"a packing of curity is thereby obtained.

Application filed February 12, 1883. (No model.)

lead, 9, or other soft metal, .is driven against it, filling the recessa at the mouth of the bowl, and serving to still further seal and keythe joint. I e

I have found by experiment that the hardmetal ring alone will .form atight joint, and is sufficient to resist the heavy pressure of the Hollywater system; but it is preferable to use the lead packing in addition,as greater se- .60 Having thus described my invention, I

I claim- 1. The combination, with a pipe having a spigot end shaped likea truncated cone, with its base at the end of the pipe, of a pipe havinga bowl the interior surface of which is parallel with theaxis of thepipe, and ahard-metal ring adapted to vbe driven into the wedgeshapedspacefor'med by the union of the two pipe ends, substantially as and forthe pur- 7o pose set forth.

2. The combination, with a pipe having a spigot end shaped like atruncated cone, with its base at the end of the pipe, of a pipe havingabowl the interior surface of which is par- 7 5 allel with the axisof the pipe, a hard-metal ring adapted to be driven into the wedgeshaped space formed by the union of the two pipe ends, and a soft-metalpacking on top of the hard-metal ring,substantially as and for thepurpose set forth. 3. A pipe having a spigot end shaped like a truncatedcone, with its base at the end of the pipe, combinedwith a pipe havingabowl the interior surface of which is parallel with the axis of thepipe, whereby a wedge-shaped recess is provided, and means whereby thejoint between the two pipe endsis packed, substantially as set forth.

4. A pipe havinga spigot end shaped like 0 a truncated cone,with' itsbase at the end of the pipe, combined with a pipe having a bowl thelower portion of the interior surface of which I is parallel with theaxis of .the pipe, while the mouth toward the bottom,whereby a shoulderis formed, and a packing material adapted to be supported in part bysaid shoulder, substantially as set forth.

5. A pipe having a spigot end shaped like a truncated cone, with itsbase at the end of In testimony thatI claim the foregoing as my thepipe, combined with a pipe having a bowl, ownI affix my signature inpresence of two wit- 10 p the lower portion of the interior surface ofnesses.

which is parallel with the axis of the pipe while the upper portionthereof is bevele. FRANK DOHERTY' from its mouth toward the bottom, ahard- Witnesses:

metal ring, fiand asoft-metal packing, sub- FREEMAN R. WILLsON, J12,

stantially as set forth. FRANK BAROUS. v

